Sealed valve



EEST AVAILABLE c0111?l J. J. CAVETT April 26 1927- SEALED VALVE Re' '16604 `r@"Qriginal Filed' Sept. 28. 1922 gllf Reissued AApr. 2 6, 1927.

UNITED STATES 'Re.16,6o4 PATENT OFFICE.

JOHN J. CAVETT, OF WOODLAWN, PENNSYLVANIA, ASSIGNOR TO THE KOPPERS COM- v PANY, A CORPORATION 0F DELAWARE. v

SEALED VALVE.

Original No. 1,540,513, dated June 2, 1925, uSerial No. 591,193; led September 28, 1922; Application for reiasuenled February 21, 1927. -Serial No. 170,020.

.Myinvention relates generally to a v alve which is applicable for use in connection with branch pipes or feeders which discharge gases into a main pipe and consists of a particular arrangement and construction for sealin such a valve, While at the same time allowing water or other liquids to pass h it while maintaining the gas seal when la One of the applications of this valve is to each of the goose necks or rising pipes, one of which is connected with each coke oven of a battery comprisin a number of coke ovens .and these/pipes disc arge the as from each coke oven into a general co ecting main which is ordinarily located' near or at the top of the battery of ovens. After the oven has been charged with coal or other materials and while the various other o enings are closed during the distilling perlod, my valve is normally open allowing the distillate ses from the oven to bev discharged into e gas collectin main.

At intervals of 18 ours, more or less, the oven has to be recharged with coal after the coke has been discharged therefrom and at this time the oven doors are open and the charging hole is also open, so that during this period my valve is closed so as to prevent-access of air, etc., into the collecting main.

My valve may be made, of conical form. with an upturned annular lip around its lower rtion so that between this lip and .the bodo of the valve an annular space is provided of approximately triangular section with rounded corners. A stream -or spray of ammonia. liquor or water, is disc arged into the goose neck of the rising pipe and is discharged thence into and past the valve into the collecting main, for the urpose of absorbing the ammonia or other y-products. p Some 'tar may also be deposited and a little of this ma also remain in the annular space of my va ve. ,The liquid thus discharged into or condensed from the gases in the rising pipe or goose neck thereof will keep the annular space in my valve sealed as the upturned ,lip ofthe valve is of such a depth as tov maintain the necessary depth of liquid therein and this height is greater than the gas pressure in order to maintain the closure. My valve is seated against a seat ring and `of a rising pi -seat scale illustrating and maintain the gas seal, while at the same V time permitting the passing of the liquids.

My valve when closed is therefore gas tight, but at the same time permits liquids to Y' pass. The notches or openings in my valve seat may be of anyform desired and my valve may be either'conical or of any other shape and thecrosssections of the annular space may be triangular, rectangular, or of any other Acontour vas may b readily understood by any one skilled in this art.

The valve ma be of disk shape or it may be conical to aifi in its seating, or it may be rectangular or ofl any other sha e, the essenf tial feature being the upturne edge to retain liquid.

Having thus given a general description of my invention, I will now, in order to make the mattermore clear, refer to the annexed sheet. of drawingsrwhich form part of this specification, and inwhich like characters refer` to like parts:

Figure 1 is a vertical sectional elevation e connection on the top of a battery of co e ovens, between one of the coke ovens and the collecting main; i

Fig. 2 is a bottom plan view of the valve Fig. 3 is' a. vertica valve seat;

Fig. 4 is a. vertical section through the valve;

Fig. 5 is a top plan view.` of the valve, and

Fig. 6 is a detail v'ew drawn ona larger the manner of forming the liquid seal between the valve seat and the valve.

Referring now. to the characters of references on the drawings 1 is the top portion of a coke oven; 2 is pa'rt of the frame work or bracket which supports the collectingmain 3; 4 is a` base ring seated in the top of the coke oven and into which the stand pipe 5 is connected as illustrated.

Connected'to the upper part'of the stand pipe 5, is the goose neck pipe 6, and this is provided with the usual swinging door or section through the Y cap 7 to permit access to the opening 8 therewhich is integrally connectedI with the valve casingr 11 the lower portionof which has an annu ar ange 12vas illustrated. An annular collar 13 is -secured to the upper portion of the collecting main 3 and to the flange 12- by means of its flanges 14, by the bolts 15. Between'these two flange 17 of the va ve seat casing 16, and thereby it is secured in place. The valve 19 illustrated as of conical form and prois theliqui vided with an upturned edge 18 forming an annular space of approximately triangular s'ectionbetween said edge and the bodyof the valve as illustrated. The valve seat casing 16 has the valve seat 20 on its lower edge and the sealing lluid in the annular space of the valve is 21- The valve 19 is provided with a su porting rod or stem 22 secured thereto, t e upper end of which passes through the cover 23 on the top of the valve casing'and this rod has'a clevis member 24 at its upper end preferably formed integrally therewith. To the clevis is pivoted a lever 26, which is rotatably mounted on the support 25, and provided with a removabl counter-we1ght`2 at its outer end.

The valve seat ortion 16 is provided with notches 28, in the ottom edge or seat thereof,

which will allow. li uids to pass by said valve when closed and :t tained by the upturned edge of the valve 18, is such as to overcome'the gas pressure and prevent the passage of gas, when the valve is closed, while allowing nids' to pass through the notches 28, thereby discharging over the'upturned edge of the valve into the collecting main. The water,

ammonia liquor, etc., is discharged into thel gbose -neek and thence into the collecting main throu h the spray pipe 29, while 30 in the bottom of the collecting When the arts are in position illustrated b the full mes in Figure l, the valve is c osed and consequently the doors and charg ing o enings for the doke oven may be open -for Dcharging, etc., and no air or other gases canbe discharged from the oven into the collecting main or vice versa.

` After the oven is charged the openings l ammonia liquc'i etc., from the s and doors thereofA are close and the distillation of gas begins, the weight 27 is removed from leverA 26 and the valve 19 is gravity to the by gases are discharged into the collecting main and over the valve, and the water or Pray Pipe 2 9, discha'rg directly into the collecting mam.

When the valve is closed the liquid passes ortions is inserted theeA height of liquids re' necte with the valve and provided with a bein linvenion in considerable detail, I' do not wish to be limited to the exa'ct and specific .details thereof, as shown and described, but may use such modifications in, substitutions for, or equivalents thereof as are embraced within the scope of my invention,- or as pointed out in the claims.

Having thus described my invention, what I claim and `desire to secure by Letters Patent is 1. A valve having an 11p-turned edge tion ada ted to retain liquid, and a seat member aving openings in its lower end against which end said valve is adapted to rest, thereby allowing liquid to pass, while providing a. gas seal.

2.- AV valve hav' an lip-turned edge adapted' t retain liquid, a valve seat adapted to cooperate therewith havin notches to allow the discharge of liquid therethrough when the valve is seated, while at the same time maintaining a gas-seal.

3. Avalve having an approximatel conical body portion with an up-turn lower edge, thus providing a continuous annular space between the edge and the body, a valve seat member ada d to contact at its lower end with said va ve between the body portion and said up-turned edgefand provided with. openings in its lower end, and means for supplying liquid to the valve whereby the valve is adapted to be sealed against the passage of gas while permitting liquid to ass.

4. A ya ve having an approximatel concal ,body ortion with an up-tume edge, thus providing a continuous annular por- Space 1 between the bod edge thereof, and1 means'for su to the valve, whereby the'va to be gas sealed when seated ing liquid to 4 .i

5. A. valve aving an vup-turned edge portion adapted to retain liquid, a valve seat adapted to cooperate therewith, means for suppl ing liqui to said valve, a lever conremovable weight ada ted to tem hold the valve in close osition, said valve# i adapted to be held open by its own weig t when saidvremovable weight is re-i moved. i 6. A valve comprising a conical body or, tion with an iip-turned edge, thus providin a continuous annular space between the ed and body, a. valveseat adapted to conta with said valve between the body portio and said up-turned edge, said seat havin notches in its contactedge, 'means foi-'su p1 ing liquid to the valve, ivhereby it is adapt;

orarily portion and tha up-tlirnetd P y I qm ve infda ted g' while a owed tov be sealed against the passage of gas while permitting llquid to pass, a valve stem nected to said stem and a weight adapted to be ut n or removed from the other end of sai lever, whereby the valve may be temporarily held closed by said weight or held open by its own weight.

7 A valve having an up-turned edge pormember adapted to have its lower end Vsubmerged in said liquid with a free space between said member and said portion, and means for supplying liquid to the valve, whereby the valve is adapted to be sealed against the passage of gas while permitting liquid to pass.

secured to`said valve, a pivoted lever con-` tion adapted to retain a liquid, and a seat Jsaid valve against theiow of gas while a1 lowing the liquid to ass; means for supplying liquid to said va ve; and means for se arating said members to permit iow of t e gas.

In testimony whereof, I have hereunto set m hand.

y JOHN J. CAV'ETT. 

